PT Unknown
AU Semenov, A
   Hübers, H
   Engel, A
   Gol’tsman, G
TI Superconducting quantum detector for far infrared astronomy
SE Far-IR, Sub-mm & MM Detector Technology Workshop
PY 2002
BP 3
EP 49
DE SQD
AB We present the concept of the superconducting quantum detector for astronomy. Response to a single absorbed photon appears due to successive formation of a normal spot and phase-slip-centres in a narrow strip carrying sub-critical supercurrent. The detector simultaneously has a moderate energy resolution and a variable cut-off wavelength depending on both the material used and operation conditions. We simulated performance of the background-limited direct detector having the 100-micrometer cut-off wavelength. Low dark count rate will allow to realise 10-21 W Hz-1/2 noise equivalent power at 4 K background radiation. The detection mechanism provides a moderate 1/20 energy resolution at 50-micrometer wavelength.
ER